Hey @jamesosborne – thanks for getting back to me.
Looks like it was a false alarm, albeit with a weird user flow that could do with being looked into…
I went to my Site Health page to get the details for you. On that page – and only that page – there was a notice from Site Kit saying that I needed to re-authenticate Site Kit.
I went through the process and this time it was trying to add permissions to access Tag Manager (woohoo). I completed the authentication, at which point I was redirected to my Site Kit dashboard. I then went to the Site Kit settings page where I was informed that I needed to finish setting up GTM. Clicked through, selected the container, etc and – job’s a good un’! I’m all hooked up now.
If the notice telling me I needed to re-authenticate had appeared on the Site Kit page that would have made a lot more sense.
Still, all fixed up now. Thanks again!